New MacBook pro will not surf the net.
My roommates MacBook pro will not connect to the Internet. It says that it is via network preferences, it even has a green light and says connected, yet It can't browse via safari (Can't even send emails or use iTunes store). He's recently come back from home where he's been using his family's router fine so, i'm thinking it's a problem with the ip and that. My pc and iPad are working fine with the router. I've tried the simple fixes like turning it on and off and inputting ip manually, so any ideas are welcome. Thanks for any help in advance.
Mac os x
10.7.4
MacBook Pro, Mac OS X (10.7.4)